12" x 12" ADJUSTABLE FIRE DAMPER SLEEVE

Adjustable sleeves for all 150 series fire dampers allow stocking of one sleeve to accommodate a multitude of damper sizes.

Galvanized Steel Provides Excellent Corrosion Resistance and Longevity.
Used in Mounting Fire Dampers.
Easy Slide Adjustment Allows This Sleeve to Fit Various Fire Damper Sizes.